Get unlimited access to ad-free articles and exclusive content. Space.com Mapping the surface features of farflung alien planets is a tough task, as a simple example illustrates. Rapidly spin a globe ...

While most planets that we are familiar with stick relatively close to their host star in a predictable orbit, some planets seem to have been knocked out of their orbits, floating through space free ...

Our planet whirls around the sun in an ellipse, rather than a circle. On Thursday the planet reached its farthest point from its star, known as aphelion. By Katrina Miller This article was originally ...

Distances in space are usually impossibly large and hard to get a handle on but this week astronomers said as many as six percent of stars known as Red Dwarfs have planets around them in the habitable ...

Excellent question. Astronomers are often faced with seeking information about objects they cannot visit to examine. Instead, they use mathematical laws and observation to determine the ...